<template>
    <div class="icons">
        <swiper :options="swiperOption">
            <swiper-slide v-for="(page, index) of pages" :key="index">
                <div class="icon"
                v-for="item of page"
                :key="item.id">
                    <div class="icon-img">
                        <img class="img-item" :src="item.iconUrl">
                    </div>
                    <p class="icon-desc">{{item.title}}</p>
                </div>
            </swiper-slide>
             <div class="swiper-pagination"  slot="pagination"></div>
        </swiper>
    </div>
</template>

<script>
export default {
    name: 'HomeIcons',
    props: {
        list: Array
    },
    data () {
        return {
            swiperOption: {
                pagination: '.swiper-pagination',
                autoplay: false
            }
        }
    },
    // 计算属性   避免某些多余代码
    computed: {
        pages () {
        // 页面数
            const pages = []
            this.list.forEach((item, index) => {
                // 计算显示的页数
                const page = Math.floor(index / 8)
                if (!pages[page]) {
                    pages[page] = []
                }
                pages[page].push(item)
            })
            return pages
        }
    }
}
</script>

<style lang="stylus" scoped>
    // 引用全局变量的方式
    @import '~styles/varibles.styl'
    @import '~styles/mixins.styl'
    .icons >>> .swiper-pagination-bullet-active
        background-color #ccc !important
    .icons >>> .swiper-container
        height 0
        padding-bottom 55%
    .icons .swiper-pagination
        bottom 0px
    .icons
        margin-top .1rem
        .icon
            overflow hidden
            position relative
            float left
            width 25%
            height 0
            padding-bottom 25%
            .icon-img
                position absolute
                top 0
                left 0
                right 0
                bottom .44rem
                box-sizing border-box
                padding .1rem
                .img-item
                    height 100%
                    display block
                    margin 0 auto
            .icon-desc
                position absolute
                bottom 0
                left 0
                right 0
                height .44rem
                line-height .44rem
                text-align center
                color $darkTextColor
                ellipsis()
</style>
